What is integratedvegetation management?

Integrated vegetation management is a systematic integrated approach to managing vegetation. It applies the right intervention method at the right place and the right time to control vegetation. The activities are integrated because they are all closely linked. In fact, the information recorded at each phase impacts the decisions for the entire process. This integration enables us to make better choices and continuously improve our integrated vegetation management approach.

Hydro-Québec's goal is not to eliminate all of the vegetation but rather only the plants that are incompatible with system reliability. Controlling the vegetation growing in the rights-of-way means planting and maintaining herbaceous plants and shrubs.

The employees that oversee vegetation management include forest industry professionals (forest engineers and technicians, biologists, etc.) and skilled specialized forestry workers hired by the industry's leading companies. Each person has received training in industry techniques and environmental studies.

At this first step, we determine the order in which the interventions will take place during the year based on the regrowth cycles of each right-of-way.

On average, work is carried out every five years. The intervention cycles vary according to local growth conditions and the approach that is selected. The farther north a line is located, the less frequent the clearing operations, since vegetation tends to grow at a slower rate in harsher climates.

Vegetation inventory and identification of sensitive elements in the environment

The vegetation in the rights-of-way is mainly analyzed from aerial photographs and/or field inspections while the work is being done. The list of sensitive elements is updated to ensure that the health and safety risks for the public, the workers and the environment are taken into account.

There are three main intervention methods, which are often used in combination according to what is most appropriate.

Hydro-Québec uses the right method at the right place and the right time.

Between (scheduled dates for the job),
Hydro-Québec will be carrying out vegetation control work in the transmission line right-of-way that runs through the municipalities of... The aim of right-of-way maintenance is to reduce the risk of power outages and allow fast and safe access to transmission facilities. Such preventive maintenance is conducted in accordance with government standards, in particular the Pesticide Management Code.

The work consists of mechanical cutting in some areas and the application of herbicides in others.

If applicable, the following text will be included:
Since herbicides will be used, it preferable not to consume small fruit that grows in the transmission line right-of-way and not to visit the right-of-way when vegetation control work is being carried out.

Work carried out by skilled employees

For Hydro-Québec, the vegetation management period starts after the snow melts and continues as long as the weather permits or until the snow makes work impossible.

Vegetation management work is carried out by skilled workers hired by independent companies that are certified by Hydro-Québec.

For example, silviculture skills (ex. brush and tree cutting) are an asset for workers who carry out mechanical cutting. Employees who apply herbicides must be certified under the Pesticides Act and the Environment Quality Act.

Quality control

Hydro-Québec oversees the work carried out by the companies and follows up to ensure that quality standards and objectives have been met.